Nut-lock.



' J. A. LATSHAW.

Patented Feb. 20, 1912.

. manner eil'ectually held against the disengagement of its stem from the? said grooves.

readily applied to the nut and bolt and read- -grooves in the bolt and nut, and a head UNITED STATES PATENT OFFICE.

JOHN A. LATSHAW, OF VANPbR'I', PENNSYLVANIA.

NUT-LOCK.

Specification of Letters Patent.

Application filed April 13, 1911.

Patented Feb. 20, 1912. Serial K0- 620,922.

ily removed therefrom when it is desired to remove the nut from the bolt.

One feature of the invent-ion resides in the rovision of a locking key' fora nut and olt, including a stem fitting in registering which rests yieldably in enga 'enien't with the threads of the bolt, the key being in this For a full understanding of the invention reference is to be had to the following description and accompanying drawing, in which l Figure ;1 is a perspective view showing the locking key embodying the present invention applied to aunt and bolt. Fig. 2 is a perspective view of the key and nut. Fig. 3 is a lon itudinal sectional view through the nut, bo t and key. Fig. 4 is a horizontal sectional view.

Corresponding and like parts are referred to in the following description and indicated in all the views of the accompanying drawin by the same reference characters.

11 the drawing, the numeral 1 indicates an ordinary bolt which is formed with longitudinally extending rooves 2, preferably diametrically.oppos1te y located. The nut which is threaded upon the bolt is indicated by the numeral 3 and has the wall of its bolt opening formed with grooves 4 which are designed to register wit the grooves 2 when the nut has been threaded upon the bolt to the desired position. I

The locking key embodying the invention is illustrated as formed from a single length of wire having its intermediate portion bent to substantially semi-annular form as at 5, and, its portions to each side of the head thus formed, bent to form parallel stems 6. 'lhesc stems extend from the ends of the head 5 and at right angles to the plane occupied by the head. In applying the .key to the nut and bolt its stems 6 are inserted into the registering grooves in the said nut and bolt and its semi-annular head 5 is snapped into engagement between the threads imme-,

diately in advance of the outer face of the not 3. As the' key is preferably formed from resilient wire, it's head 5 may be read ily sprung out of engagement with the threads of'the bolt when it is desired to remove the key and subsequently remove the nut from the bolt.

Having thus described the inventionwhat is claimed as new is:-

1. In a not lock, the combination with a bolt formed with grooves and a nut formed in the wall of its bolt opening, with a groove said grooves registering with the grooves in the bolt, of a locking key comprising spaced stems fitting in the re 'stering grooves, and a head from which I: e stems project, the said head resting yieldably .in engagement with the threads of the bolt.

2. In a nut lock, the combination with a bolt formed with grooves and a nut formed in the wall of its bolt opening with a oove, registering with the rooves m the b0 t, of a locking key formed rom a single length of wire bent to form spaced stems fitting in the registering grooves, and a connectin sub stantially semi-annular head-yieldab en gaging with the threads of the bolt an partially encircling said bolt.

In testimon whereof, I aflix my signature in presence 0 two witnesses.

- JOHN A. LATSHAW. [11.5.]

-Wit nesses:

M. FLooxi-zn, JULIA R. Fnooxan. 

